Operation: *For this item, there's only side switch to operate, press it more than 1 second for turning light on/off, press further for instant access to change modes Max(100%)-Mid(30%)-Min(5%) and strobe(click for twice quickly)*Strobe can be activated from off as long as you click the button for twice Parameters:

Max Output ( lm )

450

Runtime ( H )

1.5

Distance ( m )

150

Battery

1 * 18650

Weight ( g )

74

Size ( mm )

111 * 25 * 25.4

Output & Runtime:*Max output of 450 lumens for approximately 1.5 Hours *Mid output of 135 lumens for approximately 5 Hours *Min output of 23 lumens for approximately 35 HoursNote:Stated brightness and runtime figures are based on tests using 1PC 18650 Li-ion battery(approximate 2600mAH) under laboratory conditions. Variances in these figures will occur depending on batteries used and individual usage habits.